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Nontronite & Rockbridgeite

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MEX218412

Nontronite & Rockbridgeite

Classic Locality

Description Tabs

Description
Locality: 
Hagendorf South Pegmatite, Bavaria, Germany
Size Range: 
Thumbnail (1-3cm)
Size: 
2.4 × 1.7 × 1.3 cm
Description

Massive, light yellowish green nontronite with silky lustrous, on which are rockbrigdeite balls.

Mineral Data
What's on the rock

Nontronite

Formula: 
Na0.3Fe2((Si,Al)4O10)(OH)2·nH2O
Strunz: 
9.EC.40
Hardness: 
1.5 - 2.0
Type Locality: 
Saint-Pardoux-la-Rivière, Dordogne, Aquitaine, France

Rockbridgeite

Formula: 
Fe2+Fe3+4(PO4)3(OH)5
Strunz: 
8.BC.10
Crystal System: 
Orthorhombic
Hardness: 
3.5 - 4.5
Type Locality: 
Midvale Mine, South Mountain, Midvale, Rockbridge Co., Virginia, USA